Exhaust-muffler.



No. 765,709. v PATENTED JULY 26, 1904.

- W. J. PERKINS.

EXHAUST MUFFLER. APPLICATION FILED MAR. 13, 1903.

N0 MODEL.

UNITED STATES Patented July 26, 1904.

PATENT OEEIcE.

EXHAUST-MUFFLER.

SPECIFICATION forming part of Letters Patent No. 765,709, dated July 26,1904.

Application filed March 13, 1903.

To all whmn it may concern.-

Be it known that I, WILLIS J. PERKINS, a citizen of the United States,residing at Grand Rapids, in the county of Kent and State of Michigan,have invented certain new and useful Improvements in Exhaust-Mufiers;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in exhaustmufiiers, and moreparticularly to mufliers adapted to be used in conjunction withexplosive hydrocarbon-engines; and its object is to provide a simple,cheap, and effective device that can be readily constructed, preferablymainly of cast-iron, to provide a device easily assembled anddisassembled and conveniently cast substantially without cores, and toprovide the same with certain new and useful features hereinafter morefully described, and particularly pointed out in the claims.

My device consists. essentially, of a closed case cast in two parts andbolted together; a horizontal diaphragm of foraminous material,preferably a wire screen; a vertical partition dividing said ease intotwo separate chambers, said partition also having openings near thelower side, an inlet and outlet pipe connected to the respectivechambers, whereby the exhaust is received in one chamber and thencepasses downward through the screen and out through said openings intothe other chamber and thence upward and again through the screen,together with means forsupplying water to the receiving-chamber andaccumulating and retaining a certain quantity of this water in the lowerportion of the case, whereby the exhaust-gases are mingled with theincoming water and then caused to pass through the accumulated water andout with the outgoing water, and in the combination and arrangement ofthe various parts, as will more fully appear by reference to theaccompanying drawings, in which Figure 1 is a side elevation of a deviceembodying my invention; Fig. 2, a horizontal section of the same on theline 2 2 of Figs. 1

Serial No. l4=7,690. (N0 model.)

and 3; Fig. 3, a vertical section on the line 3 3 of Fig. 2, and Fig. 4a perspective detail of the part of the partition below the screen.

Like letters refer to like parts in all of the figures.

A and B represent the respective portions of the case constituting thebody of the mufflcr, which portions are preferably detachably secured toeach other by means of flanges and screws or bolts, as shown. Betweenthese portions and with its edges clamped between the flanges andsecured thereby is arranged a horizontal diaphragm G, of foraminousmaterial, preferably a screen of woven wire fabric, although anysuitable material having numerous openings may be used. Suitable packingGr, of plastic material, is also inserted between the flanges to preventthe escape of the contents of the case. In the axis of this case is atube or pipe C, having a number of lateral openings C near its upperend. This pipe is preferably screw threaded at its respective ends andengages threads in the upper portion B and nut A',and thus serves as astaybolt to tie the parts A and B together at the center and strengthenthe same. It also serves to admit water to the upper part of thereceiving-chamber in the form of spray or jets from the openings C. Thiswater is preferably the water used for cooling the engine and isconveyed from the engine to the pipe C by any convenient means. Suchengine and conveying means being well known are not shown in thedrawings.

D represents the exhaust-pipe of the engine, which pipe is connected tothe upper portion of the case at one side and opens into a smallreceiving-chamber in the ease separated from the rest of the interior bymeans of a vertical wall or partition composed of a portion H above thediaphragm and cast integral with the upper portion B of the case, andthe portion J cast separately and located below the portion H andextending from the diaphragm to the bottom of the case and restingthereon. In the lower portion of this partition J is a series ofvertical slots or openings K, through which the exhaust escapes into theother chamber of the case. This part of the partition J maybe secured inplace in any convenient manner. I have shown it provided withupwardly-projecting lugs I to extend through the screen G and engage theportion H of the partition. The entire case thus consists of three partsA, B, and J, each of which can be readily cast without cores, and thuscheaply constructed and also well adapted to receive and hold the screenand also easily repaired.

Opposite the exhaust-pipe D is the outletpipe E,which is attached alsoto the upper part B of the case, but at somewhat lower level, to limitthe accumulated water and to prevent its entering the exhaust-pipe whenthe engine is not running. This outlet-pipe E is extended inward intothe interior of the case, as shown at L, and has a large opening in itsupper side to permit the escape of the exhaust downward into the sameand is provided with a small bottom opening M to permit the upwardescape of the accumulated water therethrough.

F is a drain-pipe provided with any suitable stop-cock, (not shown,) bywhich the accumulated water can be drawn off as occasion requires.

The operation of this mufiler is as follows: The exhaust entering at Descapes into the smaller chamber and is directed downward by thevertical partition H J and in the upper part of this chamber isintimately mixed with the jets of water escaping from the openings C.This mixture serves to cool and somewhat condense the exhaust, whichnow, together with the water, passes downward through the screen G, andis thus further broken up, and thence passes through the slots K, whereit is again mingled with the water, carrying the same with it into themain chamber, where the exhaust is considerably expanded, and againpasses through the screen G and rises into the upper part of the saidchamber, from whence it escapes outward through the pipe E. The waterfrom the pipe C accumulates in the lower portion of the ease up to theoverflow-opening M and submerges the screen and lower portion J ofthepartition.

The screen and partition not only serve to break up and condense theexhaust, but also prevent the same from expelling the water from thedevice, which result is also still further accomplished by theinwardly-projecting part L of the outlet, which provides two sepa rateexits for the water and exhaust.

WVhenever the exhaust is in considerable quantity it will operate todrive a portion of the water out of the small receiving-chamber andthrough the openings K; but the screen and portion L of the outlet-pipewill retain the water in the main chamber up to or above the level ofthe screen G, and the exhaust will be forced to pass through this waterand the screen, and thus be broken into small portions and effectuallycooled and condensed and the noise very materially reduced thereby andthe odors absorbed and eliminated by the water.

By the described construction I am also able to use the cooling-waterfor the engine in the mufiier also and discharge it with the exhaust,thus avoiding the need of a separate discharge for this water. 1

I have shown the preferred form of my invention; but it is obvious thatvarious modifications of the same may be adopted without departing fromthe spirit of my invention.

What I claim, and desire to secure by Letters Patent, is-

1. In amufller, a case, a horizontal foraminous diaphragm in the case,said case having an inlet-opening and an outlet-opening for the exhaust,and above the diaphragm, an imperi'orate partition between saidopenings, a pipe to supply water to the case, and an overflowopening inthe case and above the diaphragm to maintain water aboveboth the loweredge of the said partition and the diaphragm.

2. In a mufller, a case, a horizontal foraminous diaphragm in the case,a vertical partition in the case and extending below the diaphragm, saidcase having inlet and exit openings for the exhaust located at therespective sides of the partition and above the diaphragm, a pipe tosupply water to the case at the inlet side of the partition, and anoverflow-opening for the water located at the other side of thepartition and above the diaphragm.

3. In a mufiler, a case adapted to contain water in its lower part, andhaving an overflow-opening to determine the water-level, a verticalpartition dividing the upper part of the case and extending into thewater-space of the lower part, means for supplying a stream of water tothe case, a foraminous diaphragm between the upper and lower part of thecase and below the overflow-opening, and inlet and exit openings for theexhaust in the upper part of the case, above the'diaphragm and at therespective sides of the partition.

4:. In a muffler, the combination of a case, a horizontal foraminousdiaphragm in the case, a vertical partition extending from top to bottomof the ease and having a series of openings below the diaphragm, andsaid case having inlet and exit openings at the respective sides of thepartition and above the diaphragm.

5. In a muffler, a case divided horizontally into two parts, ahorizontal foraminous diaphragm clamped at the edges between the twoparts, an imperforate partition above the diaphragm, a partition belowthe diaphragm and having a series of openings, said case having aninlet-opening at one side of the partition,

and an exit-opening at the other side of the partition.

6. In a muffler, a case divided horizontally into two separate parts,means for detachably securing said parts to each other, a pipe in theaxis of the case, and connecting the said parts,

, two chambers, and also having openings in its lower part, aninlet-pipe opening into one chamber, and an exit-pipe opening into theother chamber. a

7. In a mufiler, a case, a foraminous diaphragm dividing-the casehorizontally, a vertical partition in the case and extending both aboveand below the diaphragm and having openings in its lower part, awater-pipe opening into the upper part of the case at one side of thevertical partition, an exhaust-inlet opening in the top of the case atthe same side of the partition, and an exit and overflow pipe opening inthe case at the other side of the partition. v

8. In a muffler, a case, a horizontal foraminous diaphragm in the case,a vertical partition in the case, extending both above and below thediaphragm and having openings in its lower part, a pipe to admit waterto the case, said case having an exhaust-inlet opening at one side ofthe vertical partition, and an exit-pipe projecting into the case, andopen at its upper side to receive the exhaust, and having an opening inits lower side for escape of the water.

9. In a muffler, a case divided horizontally, and detachably connected,a partition a portion of which is integral with one part of the case, aseparate piece completing the partition and having slots extendingupward from its lower edge, and means for retaining the lower portion ofthe partition in place.

10. In a muffler, a case, a foraminous diaphragm extending horizontallyacross the case, a partition extending from the top of the case to nearthe bottom of the same and below the diaphragm, means for supplyingwater to the case, said case having an inlet for the exhaust near thetop and an outlet-pipe opposite the inlet-pipe and extended inwardwithin the case and having an upper opening for escape of the exhaustand a lower opening for escape of the water.

11. In a muflier, a case divided horizontally and connected by flangesand screws, a woven-wire screen dividing the interior of the case andclamped between the flanges, a vertical partition above the screen andintegral with the upper part of the case, a vertical partition below thescreen and having slotted openings in its lower edge andupwardly-projecting lugs, an inlet-pipe connected to the upper part ofthe case, and an outlet-pipe projecting into the case and having anupper opening forescape of the exhaust and a lower opening for escape ofwater, and a pipe in the axis of the case and having lateral openingsnear its upper end.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIS J. PERKINS. Witnesses:

J. W. BROWN, PALMER A. Jones.

